Scopus Journal Analyzer does not have complete citation information for articles published prior to 1996.
Four years of data are necessary to calculate a SJR or SNIP. Because Scopus records data starting in 1996, the first year available for a SJR or SNIP is 1999.
The Journal Analyzer provides a view of journal performance using Scopus citation data and includes two journal metrics - SJR and SNIP.
Using citations from nearly 18,000 titles from 5,000 international publishers, the Journal Analyzer goes back to 1996.
Scopus Journal Analyzer will chart:
You can compare up to 10 journals.